Estimates and relationships between aboveground and belowground resource exchange surface areas in a Sitka spruce managed forest

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F10%3A00176213" target="_blank" >RIV/68407700:21230/10:00176213 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Estimates and relationships between aboveground and belowground resource exchange surface areas in a Sitka spruce managed forest

Popis výsledku v původním jazyce

Our knowledge of the nature of belowground competition for moisture and nutrients is limited. In this study, we used an earth impedance method to determine the root absorbing area of Sitka spruce (Picea sitchensis (Bong.) Carr.) trees, making measurements in stands of differing density (2-, 4- and 6-m inter-tree spacing). We compared absorbing root area index (RAI(absorbing); based on the impedance measure) with fine root area index (RAI(fine); based on estimates of total surface area of fine roots) andrelated these results to investment in conductive roots. Root absorbing area was a near-linear function of tree stern diameter at 1.3 m height. At the stand level, RAI(absorbing); which is analogous to and scaled with transpiring leaf area index (maximum stomatal pore area per unit ground area; LAI(transpiring)), increased proportionally with basal area across the three stands. In contrast, RAI(fine), was inversely propotional to basal area.

Název v anglickém jazyce

Estimates and relationships between aboveground and belowground resource exchange surface areas in a Sitka spruce managed forest

Popis výsledku anglicky

Our knowledge of the nature of belowground competition for moisture and nutrients is limited. In this study, we used an earth impedance method to determine the root absorbing area of Sitka spruce (Picea sitchensis (Bong.) Carr.) trees, making measurements in stands of differing density (2-, 4- and 6-m inter-tree spacing). We compared absorbing root area index (RAI(absorbing); based on the impedance measure) with fine root area index (RAI(fine); based on estimates of total surface area of fine roots) andrelated these results to investment in conductive roots. Root absorbing area was a near-linear function of tree stern diameter at 1.3 m height. At the stand level, RAI(absorbing); which is analogous to and scaled with transpiring leaf area index (maximum stomatal pore area per unit ground area; LAI(transpiring)), increased proportionally with basal area across the three stands. In contrast, RAI(fine), was inversely propotional to basal area.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Tree Physiology

ISSN

0829-318X

e-ISSN

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Svazek periodika

2010

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CA - Kanada

Počet stran výsledku

10

Strana od-do

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Kód UT WoS článku

000278773800004

EID výsledku v databázi Scopus

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